I need a modchip for backups, for a jap sega saturn model 1, but i need it ready to put into the console, already modified, open to offers, cheers!
they have but, stock chip compatible with model 2, i need that chip but modified to work on a model 1.
Yes i know, but you have to modify the chip like this, and i'm a perfect noob with this kind of skills.
Its a long process to modify one of those to work with a model 1. Done it once so far and it worked quite nicely once all was said and done.
hmm...I have a saturn already modded with a mod chip in it and plays back ups wonderfully if you are interested
You'll never find a model 1 specific modchip without pulling one from a working model 1. The only way to get one is through modification of existing chips. I can do it but it wouldn't be cheap.
Find a late model 1 machine (with VA SG or VA SD motherboard). Those use standard 21pin drives - early model 2 machines also used these motherboards. Also, they are the sturdiest machines in my opinion. Some of the chips sold by Trenton have 20pin connectors on them, but I don't know if anyone actually tried hooking them up. One they I'm gonna map down all the connections of the cd drive on all models and figure out how to convert modchips...
As far as I know nobody has tried to fit them with a 20 pin connector. The only person besides myself ballsy enough to try would be Bad_Ad84 or Jinn (Caplis too amongst others) and I would like to think they'd have sent me a message about it by now if they were successful. I don't see any obvious reason why it wouldn't work but I don't have one of these boards in front of me to check for any other missing components. http://www.crazynation.org/SEGA/Saturn/cd_tech.htm Top of the page is a pinout for 20pin and at the very bottom is one for 21 pin. The 21 pin isn't "confirmed" and has some missing entries; I believe there is a more complete pinout elsewhere. It wouldn't be hard to do the same conversion on any of the chips I bought from Trenton_net but it'd be time consuming to figure out where all the signals go from the pins to the appropriate pad on the board. Be $20 cheaper too seeing as the Racket Boy and Segastyle chips are ~$35 each. The SSIC7A chips I have are a very similar design to the SSIC8Bs that they stock with the main differences being an almost complete move from through hole to surface mounted components and component orientation from one side of the board to the other. Of minor note is the inclusion of the A and B pads on 8B that don't exist on the 7A. If the price was right I'd be willing to investigate the possibility of modding the much cheaper SSIC7A for a model 1. Don't see why it wouldn't work but I don't guarantee anything until after it has been done successfully.
Yeah, I know most of that. What I meant was: I want to trace back the cdrom connectors on all the different motherboards I have, and THEN do comparing. We only have unverified bits and pieces everywhere right now. I have one of almost every motherboard type so I could write some proper info to be used. All boards use the same ICs, so the trick is just figuring out what goes where, which should be trivial once we have proper schematics. (some model 2s have a different cd block IC, but it should make no difference since I won't be comparing those to model 1 layouts.) edit: and if Trenton would reply to my PMs, I'd see if I could buy one of those 20pin chips from him. I want to run comparisons on the different chips too, there are like 10 different kinds.
Sorry everyone about the late PM's. I've been awfully sick recently so I haven't been able to reply as quick as I usually do. Kindly accept my apologies. (^_^);
I'd have to purchase a model 1 to test it on and I don't have that spare cash; it'd have to be factored into the price.
